/*
* ngIRCd -- The Next Generation IRC Daemon
- * Copyright (c)2001-2010 Alexander Barton (alex@barton.de)
+ * Copyright (c)2001-2012 Alexander Barton (alex@barton.de)
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
#include "hash.h"
#include "irc-write.h"
#include "log.h"
+#include "match.h"
#include "messages.h"
#include <exp.h>
assert( Client != NULL );
- if( LogMsg ) txt = LogMsg;
- else txt = FwdMsg;
- if( ! txt ) txt = "Reason unknown.";
+ txt = LogMsg ? LogMsg : FwdMsg;
+ if (!txt)
+ txt = "Reason unknown";
/* netsplit message */
if( Client->type == CLIENT_SERVER ) {
Destroy_UserOrService(c, txt, FwdMsg, SendQuit);
else if( c->type == CLIENT_SERVER )
{
- if( c != This_Server )
- {
- if( c->conn_id != NONE ) Log( LOG_NOTICE|LOG_snotice, "Server \"%s\" unregistered (connection %d): %s", c->id, c->conn_id, txt );
- else Log( LOG_NOTICE|LOG_snotice, "Server \"%s\" unregistered: %s", c->id, txt );
+ if (c != This_Server) {
+ if (c->conn_id != NONE)
+ Log(LOG_NOTICE|LOG_snotice,
+ "Server \"%s\" unregistered (connection %d): %s.",
+ c->id, c->conn_id, txt);
+ else
+ Log(LOG_NOTICE|LOG_snotice,
+ "Server \"%s\" unregistered: %s.",
+ c->id, txt);
}
/* inform other servers */
}
else
{
- if( c->conn_id != NONE )
- {
- if( c->id[0] ) Log( LOG_NOTICE, "Client \"%s\" unregistered (connection %d): %s", c->id, c->conn_id, txt );
- else Log( LOG_NOTICE, "Client unregistered (connection %d): %s", c->conn_id, txt );
+ if (c->conn_id != NONE) {
+ if (c->id[0])
+ Log(LOG_NOTICE,
+ "Client \"%s\" unregistered (connection %d): %s.",
+ c->id, c->conn_id, txt);
+ else
+ Log(LOG_NOTICE,
+ "Client unregistered (connection %d): %s.",
+ c->conn_id, txt);
} else {
- Log(LOG_WARNING, "Unregistered unknown client \"%s\": %s",
- c->id[0] ? c->id : "(No Nick)", txt );
+ Log(LOG_WARNING,
+ "Unregistered unknown client \"%s\": %s",
+ c->id[0] ? c->id : "(No Nick)", txt);
}
}
assert(Hostname != NULL);
if (strlen(Conf_CloakHost)) {
+ char cloak[GETID_LEN];
+
+ strlcpy(cloak, Hostname, GETID_LEN);
+ strlcat(cloak, Conf_CloakHostSalt, GETID_LEN);
+ snprintf(cloak, GETID_LEN, Conf_CloakHost, Hash(cloak));
+
LogDebug("Updating hostname of \"%s\": \"%s\" -> \"%s\"",
- Client_ID(Client), Client->host, Conf_CloakHost);
- strlcpy(Client->host, Conf_CloakHost, sizeof(Client->host));
+ Client_ID(Client), Client->host, cloak);
+ strlcpy(Client->host, cloak, sizeof(Client->host));
} else {
LogDebug("Updating hostname of \"%s\": \"%s\" -> \"%s\"",
Client_ID(Client), Client->host, Hostname);
} /* Client_SetFlags */
-GLOBAL void
-Client_SetPassword( CLIENT *Client, const char *Pwd )
-{
- /* set password sent by client */
-
- assert( Client != NULL );
- assert( Pwd != NULL );
-
- strlcpy(Client->pwd, Pwd, sizeof(Client->pwd));
-} /* Client_SetPassword */
-
-
GLOBAL void
Client_SetAway( CLIENT *Client, const char *Txt )
{
} /* Client_ModeDel */
+/**
+ * Search CLIENT structure of a given nick name.
+ *
+ * @return Pointer to CLIENT structure or NULL if not found.
+ */
GLOBAL CLIENT *
Client_Search( const char *Nick )
{
- /* return Client-Structure that has the corresponding Nick.
- * If none is found, return NULL.
- */
-
char search_id[CLIENT_ID_LEN], *ptr;
CLIENT *c = NULL;
UINT32 search_hash;
c = (CLIENT *)c->next;
}
return NULL;
-} /* Client_Search */
+}
+
+
+/**
+ * Serach first CLIENT structure matching a given mask of a server.
+ *
+ * The order of servers is arbitrary, but this function makes sure that the
+ * local server is always returned if the mask matches it.
+ *
+ * @return Pointer to CLIENT structure or NULL if no server could be found.
+ */
+GLOBAL CLIENT *
+Client_SearchServer(const char *Mask)
+{
+ CLIENT *c;
+
+ assert(Mask != NULL);
+
+ /* First check if mask matches the local server */
+ if (MatchCaseInsensitive(Mask, Client_ID(Client_ThisServer())))
+ return Client_ThisServer();
+
+ c = My_Clients;
+ while (c) {
+ if (Client_Type(c) == CLIENT_SERVER) {
+ /* This is a server: check if Mask matches */
+ if (MatchCaseInsensitive(Mask, c->id))
+ return c;
+ }
+ c = (CLIENT *)c->next;
+ }
+ return NULL;
+}
/**
#endif
-
/**
* Return the hostname of a client.
* @param Client Pointer to client structure
{
assert (Client != NULL);
return Client->host;
-} /* Client_Hostname */
+}
+/**
+ * Return the cloaked hostname of a client, if set.
+ * @param Client Pointer to the client structure.
+ * @return Pointer to the cloaked hostname or NULL if not set.
+ */
+GLOBAL char *
+Client_HostnameCloaked(CLIENT *Client)
+{
+ assert(Client != NULL);
+ return Client->cloaked;
+}
/**
- * Get potentially cloaked hostname of a client.
+ * Get (potentially cloaked) hostname of a client to display it to other users.
+ *
* If the client has not enabled cloaking, the real hostname is used.
+ * Please note that this function uses a global static buffer, so you can't
+ * nest invocations without overwriting earlier results!
+ *
* @param Client Pointer to client structure
* @return Pointer to client hostname
*/
GLOBAL char *
-Client_HostnameCloaked(CLIENT *Client)
+Client_HostnameDisplayed(CLIENT *Client)
{
assert(Client != NULL);
- if (Client_HasMode(Client, 'x'))
- return Client_ID(Client->introducer);
- else
+
+ /* Client isn't cloaked at all, return real hostname: */
+ if (!Client_HasMode(Client, 'x'))
return Client_Hostname(Client);
-} /* Client_HostnameCloaked */
+ /* Use an already saved cloaked hostname, if there is one */
+ if (Client->cloaked[0])
+ return Client->cloaked;
-GLOBAL char *
-Client_Password( CLIENT *Client )
+ Client_UpdateCloakedHostname(Client, NULL, NULL);
+ return Client->cloaked;
+}
+
+/**
+ * Update (and generate, if necessary) the cloaked hostname of a client.
+ *
+ * The newly set cloaked hostname is announced in the network using METADATA
+ * commands to peers that support this feature.
+ *
+ * @param Client The client of which the cloaked hostname should be updated.
+ * @param Origin The originator of the hostname change, or NULL if this server.
+ * @param Hostname The new cloaked hostname, or NULL if it should be generated.
+ */
+GLOBAL void
+Client_UpdateCloakedHostname(CLIENT *Client, CLIENT *Origin,
+ const char *Hostname)
{
- assert( Client != NULL );
- return Client->pwd;
-} /* Client_Password */
+ static char Cloak_Buffer[CLIENT_HOST_LEN];
+ assert(Client != NULL);
+ if (!Origin)
+ Origin = Client_ThisServer();
+
+ if (!Hostname) {
+ /* Generate new cloaked hostname */
+ if (*Conf_CloakHostModeX) {
+ strlcpy(Cloak_Buffer, Client->host, CLIENT_HOST_LEN);
+ strlcat(Cloak_Buffer, Conf_CloakHostSalt,
+ CLIENT_HOST_LEN);
+ snprintf(Client->cloaked, sizeof(Client->cloaked),
+ Conf_CloakHostModeX, Hash(Cloak_Buffer));
+ } else
+ strlcpy(Client->cloaked, Client_ID(Client->introducer),
+ sizeof(Client->cloaked));
+ } else
+ strlcpy(Client->cloaked, Hostname, sizeof(Client->cloaked));
+ LogDebug("Cloaked hostname of \"%s\" updated to \"%s\"",
+ Client_ID(Client), Client->cloaked);
+
+ /* Inform other servers in the network */
+ IRC_WriteStrServersPrefixFlag(Client_NextHop(Origin), Origin, 'M',
+ "METADATA %s cloakhost :%s",
+ Client_ID(Client), Client->cloaked);
+}
GLOBAL char *
Client_Modes( CLIENT *Client )
/**
* Return ID of a client with cloaked hostname: "client!user@server-name"
+ *
* This client ID is used for IRC prefixes, for example.
* Please note that this function uses a global static buffer, so you can't
* nest invocations without overwriting earlier results!
* If the client has not enabled cloaking, the real hostname is used.
+ *
* @param Client Pointer to client structure
* @return Pointer to global buffer containing the client ID
*/
/* Is the client using cloaking at all? */
if (!Client_HasMode(Client, 'x'))
- return Client_Mask(Client);
+ return Client_Mask(Client);
+
+ snprintf(Mask_Buffer, GETID_LEN, "%s!%s@%s", Client->id, Client->user,
+ Client_HostnameDisplayed(Client));
- snprintf(Mask_Buffer, GETID_LEN, "%s!%s@%s",
- Client->id, Client->user,
- *Conf_CloakModeHost ? Conf_CloakModeHost : Client_ID(Client->introducer));
return Mask_Buffer;
} /* Client_MaskCloaked */
* the appropriate error messages.
*
* @param Client Client that wants to change the nickname.
- * @param Nick New nick name.
+ * @param Nick New nickname.
* @returns true if nickname is valid, false otherwise.
*/
GLOBAL bool
return false;
}
+ if (Client_Type(Client) != CLIENT_SERVER
+ && Client_Type(Client) != CLIENT_SERVICE) {
+ /* Make sure that this isn't a restricted/forbidden nickname */
+ if (Conf_NickIsBlocked(Nick)) {
+ IRC_WriteStrClient(Client, ERR_FORBIDDENNICKNAME_MSG,
+ Client_ID(Client), Nick);
+ return false;
+ }
+ }
+
/* Nickname already registered? */
if (Client_Search(Nick)) {
IRC_WriteStrClient(Client, ERR_NICKNAMEINUSE_MSG,
Client_SetType(Client, Type);
if (From) {
- if (Conf_IsService(Conf_GetServer(Client_Conn(From)),
+ if (Conf_NickIsService(Conf_GetServer(Client_Conn(From)),
Client_ID(Client)))
Client_SetType(Client, CLIENT_SERVICE);
LogDebug("%s \"%s\" (+%s) registered (via %s, on %s, %d hop%s).",
sizeof( My_Whowas[slot].id ));
strlcpy( My_Whowas[slot].user, Client_User( Client ),
sizeof( My_Whowas[slot].user ));
- strlcpy( My_Whowas[slot].host, Client_HostnameCloaked( Client ),
+ strlcpy( My_Whowas[slot].host, Client_HostnameDisplayed( Client ),
sizeof( My_Whowas[slot].host ));
strlcpy( My_Whowas[slot].info, Client_Info( Client ),
sizeof( My_Whowas[slot].info ));
if(Client->conn_id != NONE) {
/* Local (directly connected) client */
Log(LOG_NOTICE,
- "%s \"%s\" unregistered (connection %d): %s",
+ "%s \"%s\" unregistered (connection %d): %s.",
Client_TypeText(Client), Client_Mask(Client),
Client->conn_id, Txt);
Log_ServerNotice('c', "Client exiting: %s (%s@%s) [%s]",
}
} else {
/* Remote client */
- LogDebug("%s \"%s\" unregistered: %s",
+ LogDebug("%s \"%s\" unregistered: %s.",
Client_TypeText(Client), Client_Mask(Client), Txt);
if(SendQuit) {